Related Manuals for VOKERA Mynute 12HE
Summary of Contents for VOKERA Mynute 12HE
- Page 1 Installation & Servicing Instructions 0694 0694BR1207 THESE INSTRUCTIONS TO BE RETAINED BY USER Supplied By www.heating spares.co Tel. 0161 620 6677...
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Page 2: Table Of Contents
Page Electrical supply External wiring Mounting on a combustible surface Typical control applications Timber framed buildings Other devices 3.10 Inhibitors Vokera twin-channel programmer General requirements (EIRE) Page Exploded diagrams Page 3A.1 Related documents Table 1 3A.2 Location of appliance Table 2 3A.3 Gas supply... - Page 3 The Mynute HE can also be used with the system boilers with outputs ranging from 12 to 35kW. Vokera twin flue system. The Mynute HE is approved for These appliances – by design – incorporate electronic use with C13 & C33 type flue applications.
- Page 4 2-digit LED HYDROMETRE GREEN LED RED LED TEMPERATURE SELECTOR display MODE SELECTOR SWITCH Fig. 1A Boiler at reset/standby Select this position if/when the boiler requires to be reset Boiler switched OFF Select this position if you want the boiler to remain OFF (this will over-ride any heating/hot water request from the time-clock/programmer) Boiler switched ON Select this position when you want the boiler to respond to a heating/hot water...
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Page 5: Design Principles & Operating Sequence
SECTION 1 DESIGN PRINCIPLES AND OPERATING SEQUENCE PRINCIPLE COMPONENTS fan speed sensor to ensure safe operation of the ● ● ● ● ● A fully integrated electronic control board featuring burner; electronic temperature control, anti-cycle control, a high limit thermostat that over-rides the tem- ●... -
Page 6: Technical Data
SECTION 2 TECHNICAL DATA 2.1 Central Heating 12HE 15HE 20HE 25HE 30HE 35HE Heat input (kW) 34.6 Maximum heat output (kW) 60/80°C 11.84 14.81 19.68 24.53 29.31 33.67 Minimum heat output (kW) 60/80°C Maximum heat output (kW) 30/50°C 12.74 15.90 21.16 26.30 6.84... -
Page 7: Pump Duty
2.11 PUMP DUTY Fig. 3 shows the flow-rate available – after allow- ing for pressure loss through the appliance – for system requirements. When using this graph, apply only the pressure loss of the system. The graph is based on a 20 °C temperature differential. Mynute Mynute 12-15-20-25 HE... -
Page 8: General Requirements (Uk)
SECTION 3 GENERAL REQUIREMENTS (UK) This appliance must be installed by a competent person the appliance gas inlet connection must not be in accordance with the Gas Safety (Installation & Use) used. The installation must be tested for sound- Regulations. ness in accordance with BS6891. -
Page 9: Electrical Supply
3.10 INHIBITORS An alternative method of filling the system would Vokera recommend that an inhibitor - suitable for be from an independent make-up vessel or tank use with copper and aluminium heat exchangers mounted in a position at least 1 metre above the... -
Page 10: General Requirements (Eire)
SECTION 3A GENERAL REQUIREMENTS (EIRE) This appliance must be installed by a competent In cold and/or humid weather, water vapour will person in accordance with and defined by, the condense on leaving the terminal; the effect of Standard Specification (Domestic Gas Installa- such pluming must be considered. -
Page 11: Electrical Supply
Buildings’ gives specific advice on this type of installation. 3A.10 INHIBITORS Vokera recommend that an inhibitor - suitable for use with aluminium heat exchangers - is used to protect the boiler and system from the effects of corrosion and/or electrolytic action. The inhibitor must be administered in strict accordance with the manufacturers instructions*. -
Page 12: Installation
(see fig. 6) and flue-hole (if applicable). FITTING THE FLUE The top flue outlet permits both horizontal and vertical flue applications to be considered, alterna- tively, the Vokera twin flue system can be utilised if longer flue runs are required. 4.5.1 CONCENTRIC HORIZONTAL FLUE (For concentric vertical flue, see 4.5.2) - Page 13 4.5.2 CONCENTRIC VERTICAL FLUE assembling the flue system. Connect the required The appliance can be used with either the Vokera number of flue extensions or bends (up to the condensing 60/100mm concentric flue system or maximum equivalent flue length) to the flue terminal the optional 80/125mm concentric flue system.
- Page 14 115mm hole in the ceiling and/or 4.5.3 TWIN FLUE SYSTEM roof. The Vokera twin flue system enables greater flue distances to be achieved (see 4.4.2) than that of “X” a concentric flue system. It can be used for...
- Page 15 Twin flue accessories 4.5.3.2 HORIZONTAL TERMINATION (fig. 12) The twin flue system must be converted to the Part No. Description Length dedicated concentric flue kit for termination. • The horizontal terminal is supplied with a built- 0225805 Horizontal flue terminal 1.0 metre 0225810 Vertical flue terminal...
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Page 16: Connecting The Gas & Water
You must ensure that the entire flue system is NOTE ● ● ● ● ● properly supported and connected. It will be necessary to hold the valve with one Ensure that any horizontal sections of pipe have spanner whilst tightening with another. ●... - Page 17 isolator to the appliance must be 3-core flexible 4.7.3 CONNECTING THE MAINS (230V) INPUT (see sized 0.75mm to BS 6500 or equivalent. Wiring fig. 16). to the appliance must be rated for operation in Unhook and remove the terminal block cover contact with surfaces up to 90ºC.
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Page 18: Commissioning
SECTION 5 COMMISSIONING GAS SUPPLY INSTALLATION INITIAL FLUSHING OF THE SYSTEM Inspect the entire installation including the gas The whole of the heating system must be flushed meter, test for soundness and purge. Refer to BS both cold and hot as detailed in 5.8. Open all 6891 (I.S. -
Page 19: Final Flushing Of The Heating System
BAR and a maximum of 1.5 BAR. The actual supplied reading should ideally be 1 BAR plus the online at: vokera.co.uk ● ● ● ● ● equivalent height in metres (0.1 BAR = 1 metre) for UK residents by calling: 0870 607 0281 ●... -
Page 20: General
Vokera spare appliance or removed component. Undertake a part. It should be remembered that although... -
Page 21: Lower Automatic Air Release Valves
LOWER AUTOMATIC AIR RELEASE VALVE WATER PRESSURE SWITCH (fig. 19) (fig. 19) Carry out component removal procedure as Carry out component removal procedure as described in 6.4. Locate and remove the locking described in 6.4. Remove the expansion pipe pin (I) from the water pressure switch. Remove locking pin (D) from the pump assembly and the wiring. -
Page 22: Electrodes And Condense Sensor
6.12.1 INJECTOR (fig. 22) Fig. 24 Carry out component removal procedure as described in 6.4. Unscrew and remove gas pipe connections (A & E). Locate and remove the injector (F) inside the pipe. Replace in the reverse order. Check and adjust burner pressure settings. WARNING, A GAS SOUNDNESS CHECK MUST BE CARRIED OUT. -
Page 23: Automatic By-Pass
Disconnect the flow (B), return (C) and condense 6.18 EXPANSION VESSEL (fig. 1) Should the removal and replacement of the connections on the heat exchanger. Locate and expansion vessel be deemed impractical, an remove the 4-screws that secure the heat exchanger external expansion vessel may be fitted to the to the combustion chamber (D). -
Page 24: Flue Collector Removal
AUTOSTOP: further information on the AUTO- ● ● ● ● ● STOP function, can be obtained from your local Vokera Sales Representative. OFF mode CO FUNCTION: the CO function when ● ● ● ● ●... -
Page 25: Appliance Fan Speed
Gas type and appliance fan speed (output) must 20HE 5.400 1.700 5.400 3.700 be set according to the specific appliance specification. Vokera accepts no responsibility if the 25HE 5.500 1.700 5.500 3.700 gas type and/or fan speed is not correctly adjusted 30HE 5.200... -
Page 26: Checking The Co2 & Adjusting The Valve
CHECKING THE CO2 AND ADJUSTING THE 7.4.3 COMPLETION On completion of the combustion analysis check GAS VALVE and/or any gas valve adjustment, set the HTG THE GAS VALVE MUST BE SET-UP OR trimmer to the corresponding value as detailed in ADJUSTED WITH THE AID OF A PROPERLY the fan speed table. -
Page 27: Fault Finding
7.8.2 SHORT CIRCUIT CHECK NOTE Isolate the appliance from the electrical supply, Restore the electrical supply to the boiler and turn and using a suitable multi-meter, carry out a short the selector switch to the on position. The boiler circuit test between the Live & Neutral should now function as described in section 7.2. -
Page 28: Final Fault Codes
7.12 FAULT CODES When the boiler detects a temporary fault condition, the appropriate code is shown flashing on the display. If/when the fault code is final, the pump will perform a 60-second post circulation and the red LED will be illuminated. CODE CAUSE ALARM TYPE... -
Page 29: Wiring Diagrams
For advice on controls that are not featured in this book, please contact Vokera technical on 0870 333 0520. 8.1.1 EXTERNAL WIRING LIMITATIONS... - Page 30 Do not connect any controls or auxiliary ● ● ● ● ● equipment to the 24V terminal strip, other than that approved/supplied by Vokera Ltd. Supplied By www.heating spares.co Tel. 0161 620 6677...
- Page 31 FUNCTIONAL DIAGRAM Fig. 38 NOTE. L-N-E CONNECTION MUST NOT BE INTERCHANGED CONTROL SWITCHING OF TIME CLOCK AND ROOM THERMOSTAT RATED IS 230 V.a.c. F Hv Fan power supply 230 V H.E.T. Heat exchanger thermostat M3-M5 Terminal strip for supply in/clock/room thermostat F Lv Fan signal control M3a-M4...
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Page 32: Functional Diagram
FUNCTIONAL DIAGRAM Fig. 39 8.4.1. “S” - Plan with Vokera 2-channel programmer REMOVE LINK WIRE Room Thermostat Wiring Centre Load or Junction Box Live Calling Common Cylinder Thermostat Boiler & programmer connections 8.4.2. “Y” - Plan with Vokera 2-channel programmer Fig. -
Page 33: Exploded Diagrams
SECTION 9 EXPLODED DIAGRAMS Table 1 Mynute Mynute 12-15-20 HE 25 HE Mynute 30-35 HE POS. DESCRIPTION 12 HE 15 HE 20 HE 25 HE 30 HE 35 HE Frame assembly 01005441 01005441 01005441 01005444 01005445 01005445 Pressure gauge 2564 2564 2564 2564... -
Page 34: Table 2
Table 2 Mynute Mynute 12-15-20 HE 25 HE Mynute 30-35 HE POS. DESCRIPTION 12 HE 15 HE 20 HE 25 HE 30 HE 35 HE Pressure switch 2044 2044 2044 2044 2044 2044 Heating by-pass valve 2047 2047 2047 2047 1552 1552 Heating manifold... -
Page 35: Table 3
Table 3 Mynute Mynute 12-15-20 HE 25 HE 476 477 476 477 Mynute 30-35 HE 476 477 POS. DESCRIPTION 12 HE 15 HE 20 HE 25 HE 30 HE 35 HE Expansion vessel 10028535 10028535 10028535 2204 2573 2573 Pipe 10028603 10028603 10028603... -
Page 36: Table 4
Table 4 Mynute Mynute 12-15-20 HE 25 HE Mynute 30-35 HE POS. DESCRIPTION 12 HE 15 HE 20 HE 25 HE 30 HE 35 HE Roomsealed chamber 10028341 10028341 10028341 10028341 10028447 10028447 Side 10026231 10026231 10026231 10026231 10026231 10026231 10028456 10028456 10028456... -
Page 37: Table 5
Table 5 Mynute Mynute 12-15-20 HE 25 HE Mynute 30-35 HE POS. DESCRIPTION 12 HE 15 HE 20 HE 25 HE 30 HE 35 HE Condensing exchanger assembly 01005443 01005443 01005443 01005443 01005369 01005369 Conveyor 10028536 10028536 10028536 10028536 10028623 10028623 Flue drain connection 10028421... -
Page 38: Related Documents
SECTION 10 LPG INSTRUCTIONS 10.1 RELATED DOCUMENTS BS 6798 INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 60 kW BS 5449 PART 1 FORCED CIRCULATION HOT WATER SYSTEMS BS 5446 INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES BS 5440 PART 1 FLUES BS 5482... -
Page 39: Appliance Fan Speed
ATTENTION Gas type and appliance fan speed (output) must be set according to the specific appliance speci- fication. Vokera accepts no responsibility if the gas type and/or fan speed is not correctly adjusted according to the respective appliance specifica- tion as detailed on the appliance data badge. - Page 40 BENCHMARK No. GAS BOILER COMMISSIONING CHECKLIST C O L L E C T I V E M A R K BOILER SERIAL No. NOTIFICATION No. CONTROLS To comply with the Building Regulations, each section must have a tick in one or other of the boxes TIME &...
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Page 41: Service Interval Record
SERVICE INTERVAL RECORD It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record Below. Service Provider. Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as described in the boiler manufacturer’s instructions. - Page 42 Supplied By www.heating spares.co Tel. 0161 620 6677...
- Page 43 Supplied By www.heating spares.co Tel. 0161 620 6677...
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Page 44: Benchmark
Vokèra Ltd. Floor, Catherine House, Boundary Way, Hemel Hempstead, Herts, HP2 7RP Email: enquiries@vokera.co.uk Web: www.vokera.co.uk Sales, Technical Advice, General Enquiries - Tel: 0870 333 0520 Fax: 01442 281403 After Sales Service - Tel: 0870 333 0220 Vokèra Ireland...
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